Stack vs Protodose
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Stack
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Stack is the all-in-one tracker for peptides, GLP-1 medications, and TRT protocols. Log every injection, build custom dosing schedules, track your progress, and keep your full history organized in one private place. Built for adults working with a prescribing healthcare provider, Stack replaces scattered notes and spreadsheets with a simple, consistent system you control. You enter your own values (peptide name, dose, schedule, and sites) and Stack keeps them organized, reminds you, and shows your progress over time. FEATURES โข Custom Protocols & Stacks โ Build your own multi-peptide protocols with flexible schedules (daily, weekly, every X days, or custom). Run multiple stacks at once, each clearly organized. โข Smart Dose Logging โ Log every injection in seconds and see what's due today on your Home screen and calendar. A daily streak keeps you consistent. โข Reconstitution Calculator โ Take the guesswork out of mixing. Enter vial amount, diluent volume, and target dose to get the exact mL or insulin-syringe units to draw. โข Vial & Refill Tracking โ Set how much each vial holds, watch it deplete with every dose, and refill in one tap. A tap-to-flip ring shows the exact percentage remaining. โข Injection Site Tracker โ Rotate sites with an interactive body map that remembers your recent spots, so you can avoid reusing the same area. โข Apple Health Sync โ Pull in weight, BMI, resting heart rate, HRV, sleep, steps, active energy, blood pressure, respiratory rate, body fat, lean mass, and VO2 max to see the full picture. โข Progress Photos & Compare โ Capture progress photos and view them side by side with weight and date overlays. Hide weight for privacy, then share a branded comparison. โข Meal Scan โ Snap a photo of your meal to estimate macros and keep nutrition alongside your protocol. โข AI Assistant โ Ask questions about your active stacks and protocols in a private chat built into the app. โข Metrics & Insights โ Clean charts and stats show how your protocol is trending over time. โข Home Screen Widget โ See your next dose and stay on track without opening the app. โข Shareable Protocol Card โ Generate a clean, branded card of your active protocol to save or share. PRICING Stack requires a subscription to unlock the full experience. IMPORTANT Stack is a personal record-keeping and organization tool for informational purposes only. It does not provide medical advice, diagnosis, or treatment, and is not a substitute for professional care. Always consult a qualified healthcare provider before starting, changing, or stopping any medication or protocol. Terms of Use (EULA): https://www.whatsyourstack.app/terms.html Privacy Policy: https://www.whatsyourstack.app/privacy.html Questions or feedback? Email us at contact@whatsyourstack.app.
Protodose
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Protodose is a private personal routine tracker for adults who want a clear, reviewable record of the plan they enter themselves. Start by adding your own protocol details. Today then shows what is scheduled, with a clear choice to confirm, skip, or log an entry late. Every confirmed entry can be undone from Today. USER-INPUT CONCENTRATION CONVERSION Enter your own vial strength, liquid volume, dose, and syringe scale. Protodose shows the resulting volume and syringe units from those inputs. It does not recommend a concentration or dose. SUPPLY THAT MATCHES REAL LIFE Keep separate vial, pen, or other supply lots with preparation/open and expiry dates, batch/source notes, and remaining amount. Choose a supply when you confirm an entry; only then is its amount reduced. A PRIVATE ROUTINE RECORD - Daily, specific-day, every-X-day, and cycle schedules - Saved site history with a suggested next saved site - Calendar-ready dose history with confirm, skip, late, and undo actions - Optional self-reported weight, energy, sleep, and symptom observations - Local routine reminders scheduled ahead with a visible final scheduled date - User-initiated CSV and PDF exports plus a private local backup copy Your protocol, dose, notes, supply, and check-in details stay on your device. You choose whether to export or share a file. Protodose is for personal tracking and education only. It is not medical advice and is not a substitute for a qualified healthcare professional. IMPORTANT DISCLAIMER Protodose is intended for educational, informational, and record-keeping purposes only. The app does not provide medical advice, diagnosis, treatment recommendations, or dosing instructions. Always consult a qualified healthcare professional regarding medical decisions. SUBSCRIPTIONS Weekly Pass โ $4.99 Annual Subscription โ $39.99 Payment will be charged to your Apple ID account at confirmation of purchase. Subscriptions automatically renew unless canceled at least 24 hours before the end of the current billing period. You can manage and cancel subscriptions through your Apple Account Settings. Terms of Use (Apple Standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Support: pinafaldu3748@gmail.com Terms of Service: https://peptide-tracker-dose-log.vercel.app/terms-of-service Privacy Policy: https://peptide-tracker-dose-log.vercel.app/privacy-policy
Screenshots
Verdict
The clearest difference is update cadence: Stack at every 8 days against Protodose's every 3 months. Protodose's advantage is iOS requirement (16.6 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Stack sells 2 in-app purchases, starting at $9.99 per 7 days and Protodose sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
Stack ships an update every 8 days, Protodose every 3 months. Both last shipped on October 1, 2026.
| Parameter | Stack | Protodose |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 8 days โ better | Every 3 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.0 | 16.6 โ better |
| Further details โ not scored | ||
| Size | 136 MB | 30 MB |
| Age rating | 17+ | 4+ |
| Developer | Amari Thomas | Pinak Faldu |
In-app purchases
Stack
- Stack Weekly$9.997 Days
- Stack Yearly$49.991 Year
Protodose
- Full App Access$4.991 Month
- Full App Access$39.991 Year









